:root {
  color-scheme: light;
  --bg: #f7f6f2;
  --panel: #ffffff;
  --panel-soft: #f0f4f3;
  --text: #292d2e;
  --muted: #686f70;
  --line: #dfe3e1;
  --primary: #356d78;
  --primary-dark: #28555e;
  --accent: #c97950;
  --positive: #eaf5ed;
  --negative: #fff1eb;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(36, 47, 48, 0.07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "BIZ UDPGothic", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  isolation: isolate;
  line-height: 1.8;
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: inherit; text-underline-offset: .2em; }
button, input { font: inherit; }
[hidden] { display: none !important; }
.shell { margin-inline: auto; max-width: 1080px; padding-inline: 24px; }
.skip-link { background: var(--primary); color: #fff; left: 12px; padding: .65rem 1rem; position: fixed; top: -100px; z-index: 100; }
.skip-link:focus { top: 12px; }
.controller-pattern {
  color: var(--primary);
  display: grid;
  filter: grayscale(1);
  font-family: "Segoe UI Symbol", "Noto Sans Symbols 2", sans-serif;
  font-size: 2.25rem;
  grid-auto-rows: 92px;
  grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
  inset: -70px;
  opacity: .045;
  overflow: hidden;
  place-items: center;
  pointer-events: none;
  position: fixed;
  transform: rotate(-7deg) scale(1.08);
  user-select: none;
  z-index: 0;
}
.controller-pattern span:nth-child(3n) { transform: rotate(12deg); }
.controller-pattern span:nth-child(4n) { transform: rotate(-9deg); }
main,
.site-footer { position: relative; z-index: 1; }


.hero { background: #f1f4f3; border-bottom: 1px solid var(--line); padding: clamp(54px, 8vw, 86px) 0; }
.hero-grid { align-items: center; display: grid; gap: clamp(36px, 6vw, 70px); grid-template-columns: minmax(0, 1.25fr) minmax(270px, .75fr); }
.eyebrow { color: var(--primary); font-size: .75rem; font-weight: 800; letter-spacing: .08em; margin: 0 0 .65rem; }
.hero h1, .page-hero h1, .article-header h1, .not-found h1 {
  font-size: clamp(2rem, 4.2vw, 3.35rem);
  letter-spacing: -.035em;
  line-height: 1.25;
  margin: 0;
}
.hero h1 em { color: var(--primary); font-style: normal; }
.hero-lead { color: var(--muted); font-size: 1.04rem; margin: 1.25rem 0 0; max-width: 650px; }
.hero-actions { align-items: center; display: flex; flex-wrap: wrap; gap: 18px; margin-top: 1.7rem; }
.button { align-items: center; background: var(--primary); border: 1px solid var(--primary); border-radius: 8px; color: #fff; display: inline-flex; font-weight: 800; gap: 10px; justify-content: center; min-height: 48px; padding: .7rem 1.2rem; text-decoration: none; }
.button:hover, .button:focus-visible { background: var(--primary-dark); border-color: var(--primary-dark); }
.text-link { color: var(--primary); font-weight: 700; }
.hero-panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.panel-number { color: var(--accent); font-size: .75rem; font-weight: 800; }
.hero-panel h2 { font-size: 1.15rem; margin: .25rem 0 .85rem; }
.hero-panel ol { display: grid; gap: .65rem; list-style: none; margin: 0; padding: 0; }
.hero-panel li { border-top: 1px solid var(--line); display: grid; gap: 12px; grid-template-columns: 4.8rem 1fr; padding-top: .65rem; }
.hero-panel li strong { color: var(--primary); font-size: .84rem; }
.hero-panel li span { color: var(--muted); font-size: .84rem; }

.section { padding-block: clamp(48px, 7vw, 78px); }
.section-band { background: #edf1f0; border-block: 1px solid var(--line); }
.section-heading { align-items: end; display: grid; gap: 4px 24px; grid-template-columns: 1fr auto; margin-bottom: 24px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2 { font-size: clamp(1.45rem, 2.5vw, 2rem); line-height: 1.35; margin: 0; }
.section-heading > p:not(.eyebrow) { color: var(--muted); margin: .35rem 0 0; }
.section-heading > a { color: var(--primary); font-size: .88rem; font-weight: 700; }
.article-grid { display: grid; gap: 18px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 4px 14px rgba(36,47,48,.04); min-width: 0; }
.article-card:hover, .article-card:focus-within { border-color: #b9c8c6; box-shadow: var(--shadow); }
.card-link { display: flex; flex-direction: column; height: 100%; padding: 22px; text-decoration: none; }
.card-topline { color: var(--muted); display: flex; font-size: .72rem; gap: 10px; justify-content: space-between; }
.card-topline span { color: var(--primary); font-weight: 800; }
.article-card-image { align-items: center; background: #f7f7f5; border-radius: 9px; display: flex; height: 190px; justify-content: center; margin: 1rem 0 .25rem; overflow: hidden; padding: 14px; }
.article-card-image img { height: 100%; max-width: 100%; object-fit: contain; width: 100%; }
.article-card h3 { font-size: 1.08rem; line-height: 1.55; margin: 1rem 0 .7rem; }
.article-card p { color: var(--muted); font-size: .88rem; margin: 0; }

.category-grid { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.category-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); min-width: 0; padding: 22px; text-decoration: none; }
.category-card:hover, .category-card:focus-visible { border-color: #b9c8c6; box-shadow: var(--shadow); }
.category-card > span { color: var(--accent); font-size: .72rem; font-weight: 800; }
.category-card h2, .category-card h3 { font-size: 1.08rem; margin: .7rem 0 .35rem; }
.category-card p { color: var(--muted); font-size: .86rem; margin: 0 0 .8rem; }
.category-card b { color: var(--primary); font-size: .82rem; }
.category-grid-large { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.product-shelf { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.product-grid { display: grid; gap: 16px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.product-card { border: 1px solid var(--line); border-radius: 10px; display: flex; flex-direction: column; min-width: 0; overflow: hidden; padding: 18px; }
.product-image { align-items: center; display: flex; height: 150px; justify-content: center; margin: .7rem 0; }
.product-image img { height: 100%; max-width: 100%; object-fit: contain; }
.product-card h3 { font-size: 1rem; line-height: 1.45; margin: .6rem 0; }
.product-card > p { color: var(--muted); font-size: .8rem; }
.rakuten-item { background: #f6f7f5; border-radius: 8px; font-size: .73rem; padding: 10px; }
.rakuten-item p { margin: .3rem 0; }
.rakuten-item > div { display: grid; gap: 2px; }
.rakuten-item > div span:first-child { font-weight: 800; }
.store-buttons { display: grid; gap: 8px; grid-template-columns: 1fr; margin-top: auto; }
.button-product { font-size: .78rem; margin-top: 0; width: 100%; }
.button-amazon { background: #293744; border-color: #293744; }
.button-amazon:hover,
.button-amazon:focus-visible { background: #18232d; border-color: #18232d; }

.trust-strip { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
.trust-strip > div { border-top: 2px solid var(--primary); padding-top: 16px; }
.trust-strip span { color: var(--accent); font-size: .72rem; font-weight: 800; }
.trust-strip h3 { font-size: 1rem; margin: .35rem 0; }
.trust-strip p { color: var(--muted); font-size: .84rem; margin: 0; }

.breadcrumbs { color: var(--muted); font-size: .76rem; padding-top: 22px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 6px; }
.page-hero { padding-block: clamp(46px, 7vw, 74px) 18px; }
.article-list-section { padding-top: 24px; }

.article-header { max-width: 880px; padding-block: clamp(42px, 7vw, 72px) 34px; }
.article-header h1 { font-size: clamp(.95rem, 2vw, 1.5rem); }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: .85rem; }
.tag-row span { background: #edf1f0; border-radius: 999px; color: var(--muted); font-size: .72rem; padding: .25rem .65rem; }
.article-shell { align-items: start; display: grid; gap: 42px; grid-template-columns: 210px minmax(0, 720px); justify-content: center; padding-bottom: 76px; }
.article-toc { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; left: max(24px, calc((100vw - 1080px) / 2 + 24px)); max-height: calc(100vh - max(220px, 34vh) - 24px); overflow-y: auto; padding: 17px; position: fixed; top: max(220px, 34vh); width: 210px; }
.article-toc > p { font-size: .78rem; font-weight: 800; margin: 0 0 .65rem; }
.article-toc ol { display: grid; gap: .55rem; margin: 0; padding-left: 1.15rem; }
.article-toc li { color: var(--muted); font-size: .74rem; line-height: 1.5; }
.article-toc a { text-decoration: none; }
.article-toc a:hover, .article-toc a:focus-visible { color: var(--primary); text-decoration: underline; }
.toc-disclosure { border-top: 1px solid var(--line); color: var(--muted); font-size: .65rem; margin-top: 1rem; padding-top: .75rem; }
.article-main { grid-column: 2; min-width: 0; }
.verdict-box { background: var(--panel-soft); border-radius: var(--radius); margin-bottom: 34px; padding: 24px; }
.verdict-box h2 { font-size: 1.35rem; margin: 0 0 .7rem; }
.verdict-box > p:not(.eyebrow) { margin: 0; }
.verdict-box ul { margin: 1rem 0 0; padding-left: 1.25rem; }
.verdict-box li { margin-top: .35rem; }
.article-section { border-top: 1px solid var(--line); padding: 34px 0 12px; }
.article-section:first-child { border-top: 0; padding-top: 8px; }
.article-section h2 { font-size: clamp(1.3rem, 2.7vw, 1.7rem); line-height: 1.5; margin: 0 0 1rem; }
.article-section h2 span { color: var(--accent); display: block; font-size: .72rem; letter-spacing: .08em; }
.article-section p { margin: 0 0 1rem; }
.article-points { display: grid; gap: 10px; list-style: none; margin: 0; padding: 0; }
.article-points li { background: #f2f5f4; border-left: 3px solid var(--primary); border-radius: 7px; padding: .8rem 1rem; }
.article-points.positive li { background: var(--positive); border-color: #65986d; }
.article-points.negative li { background: var(--negative); border-color: var(--accent); }
.article-main .product-shelf { margin: 38px 0; }
.article-main .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.article-main .store-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.article-main .section-heading { display: block; }
.article-main .section-heading h2 { font-size: 1.35rem; }
.article-main .section-heading > p:not(.eyebrow) { font-size: .82rem; }
.faq { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 34px; }
.faq h2 { font-size: 1.5rem; }
.faq details { border-top: 1px solid var(--line); padding: .8rem 0; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { color: var(--muted); }
.article-sources { border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; margin-top: 40px; padding-top: 24px; }
.source-title { color: var(--text); font-size: .92rem; font-weight: 800; margin-bottom: .35rem; }
.article-sources ol { padding-left: 1.2rem; }
.article-sources li { margin: .4rem 0; }
.article-sources li span { display: block; font-size: .7rem; }
.ad-unit { border: 1px dashed var(--line); color: var(--muted); margin-block: 30px; min-height: 100px; padding: 12px; text-align: center; }
.ad-unit > span { font-size: .68rem; }

.prose-page { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 72px; max-width: 820px; padding: clamp(24px, 5vw, 46px); }
.prose-page h2 { font-size: 1.3rem; margin: 2.1rem 0 .7rem; }
.prose-page h2:first-child { margin-top: 0; }
.prose-page p, .prose-page li { color: var(--muted); }
.empty-state { color: var(--muted); }
.not-found { min-height: 58vh; padding-block: 90px; text-align: center; }
.not-found p:not(.eyebrow) { color: var(--muted); }

.site-footer { background: #e9eeec; border-top: 1px solid var(--line); color: var(--muted); padding: 42px 0 22px; }
.footer-grid { display: grid; gap: 28px; grid-template-columns: 1fr auto 1fr; }
.footer-grid p { font-size: .8rem; margin: .2rem 0; }
.footer-logo { color: var(--text); font-size: 1rem !important; font-weight: 800; }
.footer-grid nav { display: grid; gap: .35rem; }
.footer-grid nav a { font-size: .78rem; }
.footer-note { max-width: 320px; }
.copyright { border-top: 1px solid #d5dbd8; font-size: .68rem; margin-top: 30px; padding-top: 18px; }

@media (max-width: 900px) {
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-shell { gap: 28px; grid-template-columns: 180px minmax(0, 1fr); }
  .article-toc { left: 24px; width: 180px; }
}

@media (max-width: 720px) {
  html { scroll-padding-top: 72px; }
  .shell { padding-inline: 17px; }
  .controller-pattern { font-size: 1.8rem; grid-auto-rows: 98px; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); opacity: .035; }
  .hero { padding-block: 44px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1, .page-hero h1, .not-found h1 { font-size: clamp(1.85rem, 8vw, 2.35rem); }
  .article-header h1 { font-size: clamp(.9rem, 3.9vw, 1.125rem); }
  .hero-lead { font-size: .96rem; }
  .section-heading { display: block; }
  .section-heading > a { display: inline-block; margin-top: .7rem; }
  .article-grid, .category-grid, .category-grid-large, .trust-strip { grid-template-columns: 1fr; }
  .article-shell { display: block; }
  .article-toc { margin-bottom: 24px; max-height: none; overflow: visible; position: static; width: auto; }
  .article-main { grid-column: auto; }
  .article-main .product-grid { grid-template-columns: 1fr; }
  .article-main .store-buttons { grid-template-columns: 1fr; }
  .article-card-image { height: 220px; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  body { font-size: .96rem; }
  .shell { padding-inline: 14px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .product-grid { grid-template-columns: 1fr; }
  .product-shelf { padding: 16px; }
  .article-header { padding-top: 34px; }
  .article-section { padding-top: 28px; }
  .article-section h2 { font-size: 1.25rem; }
  .article-points li { padding: .75rem .85rem; }
}